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5969 E Broad St.
Columbus, OH
43213-1546
Phone (614) 864-6010
Toll Free (866) 877-1757
Fax
(614) 864-0306




Our Physicians

John. Kelley Brennan, M.D.
Under Graduate – Notre Dame
Medical School – Ohio State University graduated 1971
Internship - York Hospital, York Pennsylvania 1971-1972
Residency – York Hospital, York Pennsylvania 1972-1973, 1975-1977
BOARD CERTIFIED since 1977
Specialty – Internal Medicine
Employed with Canyon Medical Center since 1988

Stephen Canowitz, M.D.
Under Graduate – Miami University of Ohio
Medical School – Medical College of Ohio, Toledo Ohio graduated 1995
Internship – Medical College of Ohio 1994-1995
Residency – Medical College of Ohio 1995-1998
BOARD CERTIFIED in Internal Medicine since 1998
BOARD CERTIFIED in Pediatrics since 1998
Specialty – Internal Medicine & Pediatrics
Employed with Canyon Medical Center since 1998

John DiPietra, M.D.
Under Graduate – Fordham University
Medical School – University of Padua Padua, Italy graduated 1988
Internship – Long Island College Hospital 1988-1989
Residency – Long Island College Hospital 1991-1992
BOARD CERTIFIED since 1996
Specialty – Internal Medicine
Employed with Canyon Medical Center since 1994

Mark Hackman, M.D.
Under Graduate – Ohio State University
Medical School – Medical College of Ohio, Toledo Ohio graduated 1982
Internship – Riverside Methodist Hospital 1982-1983
Residency – Riverside Methodist Hospital 1983-1985
BOARD CERTIFIED since 1985
Specialty – Internal Medicine
At Canyon Medical Center since 1985

Robert Hershfield, M.D.
Graduate – Northwestern University, Evanston, IL PhD in Chemistry
Medical School – Yale University graduated 1978
Internship – Mt. Carmel Medical Center 1978-1979
Residency – Mt. Carmel Medical Center 1979-1981
BOARD CERTIFIED since 1981
Specialty – Internal Medicine
Employed with Canyon Medical Center since 1981

Sarah Jonaus, M.D.
Under Graduate – University of Wisconsin
Medical School – University of Wisconsin graduated 1996
Internship – University of Virginia 1996-1997
Residency – University of Virginia 1997-1999
BOARD CERTIFIED since 1999
Specialty – Internal Medicine
Employed with Canyon Medical Center since 1999

Stephen Shell, M.D.
Under Graduate – Ohio State University
Medical School – Ohio State University graduated 1969
Internal Medicine Residency – Henry Ford Hospital 1969-1972
Residency – Henry Ford Hospital 1974-1975
BOARD CERTIFIED since 1976
Specialty – Internal Medicine
Employed with Canyon Medical Center since 1975

Ethan Shoaps, M.D.
Under Graduate – Notre Dame University
Medical School – Medical College of Ohio graduated 1998
Internship – Ohio State University Medical Center 1998-1999
Residency – Ohio State University Medical Center 1999-2002
BOARD QUALIFIED
Specialty – Internal Medicine & Pediatrics
Employed with Canyon Medical Center since 2002
American Board Certified in Internal Medicine and Pediatrics

Boris Valdman, M.D.
Under Graduate – OMSK Medical Institute, OMSK U.S.S.R.
Medical School – OMSK Medical Institute, OMSK U.S.S.R.graduated 1989
Internship – Jewish Hospital of Cincinnati 1993-1994
Residency – Jewish Hospital of Cincinnati 1994-1996
BOARD CERTIFIED since 1996
Specialty – Internal Medicine
Employed with Canyon Medical Center since 1996

Timothy Nuss, C.N.P.